Polyurethane resins produced from active hydrogen containing material which is a dispersion of polyisocyanate-polyaddition products in hydroxyl containing compounds as dispersing agents

US4093569A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Artur Reischl · Leverkusen, DE
• Gert Jabs
• Alberto C. Gonzalez-Dorner · Bassano del Grappa, IT

Key dates

• Filing date: Nov 10, 1976
• Grant date: Jun 6, 1978
• Expiry date: Nov 10, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/302
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to the use of certain finely divided, stable and relatively low viscosity dispersions of polyisocyanate polyaddition products in compounds having hyroxyl groups. The dispersions are produced by reacting PA1 1. organic polyisocyanates with PA1 2. compounds having primary and/or secondary amino groups and/or primary hydroxyl groups in PA1 3. compounds having at least one hydroxyl group, wherein Compounds (3) have secondary hydroxyl groups in cases when compounds (2) have primary hydroxyl groups and wherein the components are reacted in the presence of more than 4% by weight of water, based on the quantity of reaction mixture including water.